Postfix "unable to verify address"

Support
, , ,
1

NethServer release 7.4.1708 (Final)
Postifix mdule

Hello There,
I’m having some issues sending e-mail to some domains (hotmail, yahoo…).
Any time my customer try to send e-mails to those domains the message never reach the destnation inbox.
This happens just with some sender e-mail boxes, it works great with others

Mailog says:
Oct 27 11:44:30 mail postfix/smtp[3225]: EF5EDA001A1: to=zzz@yahoo.com, relay=out.alice.it[82.57.200.132]:25, delay=0.22, delays=0/0.01/0.17/0.04, d
sn=4.0.0, status=deferred (host out.alice.it[82.57.200.132] said: 451 xxx@yyy.it unable to verify address (in reply to MAIL FROM command)

I already pushed my customer to subscribe a service like sendinblue.com so to have a reliable smtp,and not to use the Telecom one anymore which, IMHO, is the real problem.

Anyway I just would like to have some feedback.

Have you ever had this kind of problem?
Can be related to some misconfiguration/bug on Nethserver side?
Or, as I believe, the problem is the Telecom Italia smtp.

Thank you

2

Hi Daniele,
for me it’s looking like alice.it can’t find xxx@yyy.it. If xxx@yyy.it is the right address you want to sent your mail to, please communicate it to alice.it, I think they have a problem.

1 Like
3

I think that too

Thank you

1 Like